Language:
كتاب الوضوء
4  
Ablutions (Wudu')
(67)
Chapter: An-Najasat (impure and filthy things) which fall in cooking butter (ghee - which is obtained by evaporating moisture from butter) and water
(67)
باب مَا يَقَعُ مِنَ النَّجَاسَاتِ فِي السَّمْنِ وَالْمَاءِ
Sahih al-Bukhari 237

Narrated Abu Huraira:

The Prophet (ﷺ) said, "A wound which a Muslim receives in Allah's cause will appear on the Day of Resurrection as it was at the time of infliction; blood will be flowing from the wound and its color will be that of the blood but will smell like musk."

حَدَّثَنَا أَحْمَدُ بْنُ مُحَمَّدٍ، قَالَ أَخْبَرَنَا عَبْدُ اللَّهِ، قَالَ أَخْبَرَنَا مَعْمَرٌ، عَنْ هَمَّامِ بْنِ مُنَبِّهٍ، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏ "‏ كُلُّ كَلْمٍ يُكْلَمُهُ الْمُسْلِمُ فِي سَبِيلِ اللَّهِ يَكُونُ يَوْمَ الْقِيَامَةِ كَهَيْئَتِهَا إِذْ طُعِنَتْ، تَفَجَّرُ دَمًا، اللَّوْنُ لَوْنُ الدَّمِ، وَالْعَرْفُ عَرْفُ الْمِسْكِ ‏"‏‏.‏
Reference : Sahih al-Bukhari 237
In-book reference : Book 4, Hadith 103
USC-MSA web (English) reference : Vol. 1, Book 4, Hadith 238
  (deprecated numbering scheme)